My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content The Other Sure Thing Though we don't like to think about it, all of us will make an exit sometime. Are you prepared? Charitable Giving: Smart from the Heart Do you have causes that you want to support with donations? What Is a Roth 401(k)? Roth 401(k) plans combine features of traditional 401(k) plans with those of a Roth IRA.